Advantages of SDN over traditional networking

SDN has many advantages over traditional networking: a. Due to the introduction of some automation in the process of networking through SDN, scalability has been increased significantly, which is also a critical requirement of the current market. b. Unlike conventional networking, SDN only requires one centralised control plane which offsets the cost of the forwarding plane. c. VM migration becomes easier. d. Automating the configuration is possible. e. Quality of Service can be provided in a more efficient way.

As shown in Figure 2, the SDN controller provides a programmable interface to the OF switches. With the help of this interface, different network applications can be written to control, manage and offer new functionalities. A recent study of several OpenFlow implementations, conducted on a large emulated network with 100,000 hosts and 256 switches, revealed that all the controllers were able to handle about 50,000 new flow requests per second. Besides, according to research going on at Stanford University, the new

…where options include the installation of various packages along with Mininet, which can be seen using the Help option.

After the successful installation of Mininet (along with the POX controller), we can start POX using the following command: The above command tells the POX controller to enable verbose logging and to start the of_tutorial file, which acts as an Ethernet hub right now.

Now, start the Mininet openflow tool to perform experiments using the following command line: